I have three VMware 5 host servers and two cisco 4507 core switches connected via HSRP. Each host server has 8 nics. What would be the best way to wire the nics and setup the ports on the core? I have vlan10 for the VM's, Vlan20 for iSCSI, and vlan30 for management/vmotion. the main questions i have for this are, should i setup separate port groups for each vlan on the cores? or just create one big one and trunk it for all traffic? also when i'm wiring the nics to the cores can ports on two separate cores in two different port groups connect to the same vSwitch on a host? I was planning on splitting up the nics between the cores. Will this affect the performance? should i do one full 4 port card to one core and the other to the other switch? I'm just looking for the best setup for performance and redundancy.